Abstract: A radar system is described comprising a transceiver configured to cyclically transmit a first radar signal in a field of view and to cyclically receive a second radar signal from the field of view, and a processing unit configured to process the second radar signal to generate a detection track and detect the presence of a target in the field of view from the detection track. The radar system comprises a marker that can be placed in the field of view and is configured to emit a predetermined reflection signal when impinged upon by said first radar signal and send said predetermined reflection signal to the transceiver. The processing unit is further configured to store a predetermined diagnostic trace, and check whether the predetermined diagnostic track is present in the detection track to thereby determine whether the second radar signal contains the predefined reflection signal and, if not, to indicate a malfunction in the radar system.

Abstract: In a radar system, a marker is placed in the field of view of a transceiver. The marker receives the radar signal transmitted by the transceiver and retransmits, as a function of this radar signal, a diagnostic radar signal, for example originating from reflections of the collected signal inside the marker. Then, the transceiver, while collecting and processing the signal from the field of view to detect the targets therein, checks whether the diagnostic radar signal, interpreted as a target with characteristic position and amplitude, is present. If this does not match the expected signal, a malfunction is indicated. The marker may be activated periodically, for example only when system diagnostics is required. A variety of internal configurations of the marker can change the characteristic position, to create a movable and easily identifiable dummy target.

Abstract: A radar system is described comprising a transceiver configured to cyclically transmit a first radar signal in a field of view and to cyclically receive a second radar signal from the field of view, and a processing unit configured to process the second radar signal to generate a detection track and detect the presence of a target in the field of view from the detection track. The radar system comprises a marker that can be placed in the field of view and is configured to emit a predetermined reflection signal when impinged upon by said first radar signal and send said predetermined reflection signal to the transceiver. The processing unit is further configured to store a predetermined diagnostic trace, and check whether the predetermined diagnostic track is present in the detection track to thereby determine whether the second radar signal contains the predefined reflection signal and, if not, to indicate a malfunction in the radar system.

Abstract: A system (1) and a method for finding the direction (?) of a target (6) in a detection plane, e.g. the azimuthal plane. The system comprises a plurality of transceivers (2a, 2b, 2c) which transmit continuous-wave radio signals (4) oriented in distinct main directions of transmission (5a, 5b, 5c) and receive a return radio signal (7) reflected from a target (6), wherein the transceivers have partially overlapping angular fields of view. A controller (9) analyzes the transmitted and return signals by calculating signal amplitudes associated with the return signals and determining the direction (?) of the target as a direction of a mean signal vector obtained from signal vectors having as a modulus the signal amplitudes of respective transceivers.

Abstract: A system (1) and a method for finding the direction (?) of a target (6) in a detection plane, e.g. the azimuthal plane. The system comprises a plurality of transceivers (2a, 2b, 2c) which transmit continuous-wave radio signals (4) oriented in distinct main directions of transmission (5a, 5b, 5c) and receive a return radio signal (7) reflected from a target (6), wherein the transceivers have partially overlapping angular fields of view. A controller (9) analyzes the transmitted and return signals by calculating signal amplitudes associated with the return signals and determining the direction (?) of the target as a direction of a mean signal vector obtained from signal vectors having as a modulus the signal amplitudes of respective transceivers.